WRT Certification

WRT Certification Questions And Detailed Answers 100% ___ _____ is the temperature at which air becomes saturated with moisture and can hold no more water vapor. - Dew point _____ ________ is the force exerted by a gas (vapor molecules) on the surrounding environment. - Vapor pressure _______ represents the "was-wood" material with the least engineering, and thus the most natural fiber bonding. It is _________ to swelling and delamination due to its wood veneer assemblies which are glued under extreme pressure. - Plywood & resistant ________ ________ is defined as the amount of moisture contained in an air sample, as compared to the maximum amount the air could hold at that temperature. - Relative humidity (RH) ___________ drying systems merge the benefits of both open and closed drying: the use of available, dry air from outside and the control offered by a closed system and mechanical dehumidification. - Combination ___________ occurs when a solid changes to a vapor (without going through a liquid phase.) - Sublimation ___________ occurs when liquid changes to a vapor. Occurs as energy is increased. - Evaporation ____________ occurs when vapor changes to a liquid. Occurs as every is removed. - Condensation 3 drying systems: - 1. Open- intentionally using outdoor air 2. Closed- using mechanical dehumidification only 3. Combination- using outdoor air combined with mechanical dehumidification A balanced drying system is achieved when the rate of dehumidification is greater than or equal to the rate of ___________. - evaporation A thermo-hygrometer is used to monitor any air that can influence the ___________ and/or ________ ________ with a restorative drying environment. - temperature & relative humidity Abide by local ____ and regulations when disposing extracted water. Waste water is best disposed of into a sanitary sewer. - laws After excess water has been extracted, the time needed to dry wet materials is determined by the ____ __ ___________. - rate of evaporation After safety concerns have been addressed and the initial water source has been stopped, the restorer must complete an evaluation of the water's migration through the structure. During this process, the restorer inspects all ___________ ________ areas. - potentially affected Air filtration devices (AFDs) are needed in water restoration work whenever high level of ____________ are being added to the air. - particulates Airflow in the wall cavity increases the rate of ___________ and allows the wall to dry from both inside and out. - evaporation All restorers should follow the standard of care for the water restoration profession developed by the restoration industry entitled the IICRC ____. - S500 As moisture evaporates from a wet material, the surface of the material becomes ______ because energy is released from the material. - cooler As the water is rapidly evaporated, the water vapor is removed by ________________ or ___________. - dehumidification & ventilation As with any contaminant, mold should be removed or contained before any air movers are placed in the structure. Blowing air can spread mold spores from the ____________ area to the __________ rooms. - contaminated & unaffected Because desiccant dehumidifiers do not use condensation to remove water, they are not limited by low dew point temperatures; therefore, they produce the lowest _____ ________ of any dehumidifier. - vapor pressure Because of their non-invasive nature and quick surveying capabilities, non-invasive meters are the most effective tools for locating abnormal moisture behind and beneath finishing materials such as _______ ____ and resilient _____ floor coverings. - ceramic tile & vinyl Class 1 water intrusions involve the _____ amount